Clear Channel Airports, the folks who put up billboards at airports, have released a free location-based mobile app for the iPhone called FLYsmart. FLYsmart allows air travelers to quickly locate services and amenities in terminals, as well as browse live feeds of arrival and departure information. The app is free, if you fly to or from the cities listed below, this is a great app to have on your iPhone. More info:

FLYsmart intuitively maps and displays all the immediate information busy air travelers need to locate anything from newsstands, gift shops and restaurants, to terminal information, restrooms and more. With just one touch, the map enables travelers to navigate concourses. Another touch can show hotels and services around the airport and even access information about the current city for travelers.